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Please use our new & improved search engine to find information on your trouble codes. Search Now! This list contains standard diagnostic trouble codes (DTC's) that are used by some manufacturers to identify vehicle problems. The codes provide below are generic codes that may not apply to all vehicles. Vehicle manufacturers may use manufacturer specific DTC codes that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes. We recommend that you not depend on the DTC codes in this list for vehicle repairs until you confirm the generic DTC codes apply to your vehicle(s). The list below is for information purposes only and is not intended for use in vehicle repairs.

the following answer is courtsey of OBD-CODES.com OBD Codes Your OBD-II Trouble Codes Repair Site Home Trouble Codes FAQs Forums Store P0299 Turbo / Supercharger Underboost OBD-II Trouble Code Technical Description Turbocharger/Supercharger "A" Underboost Condition What does that mean? The P0299 DTC code refers to a condition where the PCM/ECM (powertrain/engine control module) has detected that the bank "A" or single turbocharger or supercharger is not providing a normal amount of boost. That could be due to a variety of reasons, which we detail below. On a normally operating turbocharged or supercharged engine the air going into the engine is pressurized and that's part of what makes so much power for an engine of it's size. If this code is set, you will likely notice reduced power output. In the case of Ford vehicles, this may apply: "The PCM checks for a minimum throttle intake pressure (TIP) PID reading during engine operation, which indicates an underboost condition. This DTC sets when the PCM detects that the actual throttle intake pressure is less than the desired throttle intake pressure by 4 psi or more for 5 seconds." Symptoms Symptoms of a P0299 DTC may include: MIL (Malfunction indicator lamp) illumination Reduced power output from engine, possibly in a limp mode Unusual sounds from the engine/turbo There would likely be no other symptoms. Potential Causes Potential causes of a P0299 turbo underboost code include: Intake (induction) air restriction or leak Failed or damaged turbocharger (sticking, binding, etc.) Faulty boost/charge pressure sensor Faulty wastegate bypass regulator valve (VW) Low fuel pressure condition (Isuzu) Sticking turbo nozzle control solenoid (Isuzu) Faulty injector control pressure (ICP) sensor (Ford) Low oil pressure (Ford) EGR system fault (Ford) Variable geometry turbocharger (VGT) actuator (Ford) VGT vanes sticking (Ford) Possible Solutions First off, you'll want to repair any other DTC codes if present prior to diagnosing this code. Start with a visual inspection. Inspect the intake air system for cracks, loose or disconnected hoses, restrictions, blockages, etc. Repair or replace as required. If the air induction system tests OK, then you'll want to focus your diagnosis efforts on the charge pressure control, diverter valve (blowoff valve), sensors, regulators, etc. Really at this point you'll want to refer to a vehicle specific detailed repair manual for specific troubleshooting steps. There are some known issues on certain makes and engines so also check out our car repair forums here and search using your keywords. For example, if you search around, you'll find that a common fix for a P0299 in VWs is to replace or repair the diverter valve or wastegate solenoid. On the GM Duramax diesel, this code may mean the turbo housing resonator has failed. If you have a Ford, you'll want to next check the wastegate regulating valve solenoid for correct operation

The Check Engine light must be reset using an OBD-II code reader. Dealers have them as do repair shops. Places like AutoZone will read the codes for you, but normally will not reset the Check Engine light due to possible liability issues. You can purchase a code reader at these places to do this yourself. Make sure you get one that can read and reset the engine light. The very cheap ones cannot reset the Check Engine light.

The "service" engine light is on for a reason, the On Board Diagnostic (OBD) is sensing a problem with some part of the car. The service light will stay on until the problem is resolved. It is unlikely that the problem will resolve by itself and so it needs human intervention. You or a mechanic can hook up an OBD code reader and determine what code(s) is causing the engine light to illuminate. If you want to do it yourself, a simple code reader can be purchased for about $100+, you usually get what you pay for. Also, some auto part stores offer to hook up their code reader in hopes that you'll purchase the repair parts from them. Once the problem is determined, it can be repaired, and the car should turn the service light off. It is also possible to turn off the service light with the OBD code reader, but this is not advisable for the novice to do. For more help, contact me again at FixYa and I will be glad to assist.

Hello,Would appreciate more information? However if the vehicle hasn't developed any faults then this possibly means your service interval is due.The engine light is part of OBD diagnostic system via the vehicles on board computer, you do not have to take it to a Honda dealer just find a competant technician who has the necessary OBD checking and re-setting equipment. You may have to have some work carried out and will possibly be charged for diagnostic'sI hope this answers your brief request.Good Luck!Paul 'W'Onyer~EDson(:0)~[>< U.K.